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(No Model.) F. A. GARRETT.

ADJUSTIYNG DEVIGB PoR DAMPBRS. V No. 378,671. Patented Peb. 28, 1888.

N. PETER$ Fhalu-Lihographer, Wuhingon. D, C.

llllivrrnn Strains Parent trice.

FRANK A. GARRETT, OF SYRACUSE, NEV YORK. Y

ADJUSTHNG DEVICE FOR DANPERS.

SPECFICATION forming part of Letters Patent No. 378,671, dated February28, 1888.

Application filed February 3, 1887. Serial No. 226,404. (No model.)

To @ZZ whom, t may concern.-

` Be it known that I, FRANK A. Gunnnrr, of the city of Syracuse, in thecounty of Onondaga and State of New York, have invented new and usefulImprovements in Adjusting Devices for Dampers, of which the following isa specification.

rlhis invention relates to that class ofdevices which are employed foradjusting the dampers or valves of furnaces, stoves, and other apparatusfrom convenient points located at a distance from the dampers or valves,more especially from the different doors of a building.

The object of this invention is to produce a simple device which can beconveniently placed in position in a building and by which the damper orvalve can be adjusted and locked in position from the floor on which thedamper or valve is located and from any other door with which theadjusting device is connected.

My invention consists of the improvements, which will be hereinafterfully set forth, and pointed out in the claims.

In the accompanying drawings, Figure lis a fragmentary sectionalelevation of a building provided with my improved dampenadjustingdevice. Fig. 2 is a side elevation of the adjusting device. Fig. 3 is afront elevation thereof. Fig. 4 is a sectional elevation of the lowerportion ofthe adjusting device. Fig. 5 is a fragmentary sectionalelevation of the upper portion of the adjusting device. Fig. Gis ahorizontal section in line x zr, Fig. 5. Figs. 7 and 8 are horizontalsections in lines yy and .e e, Fig. 2, respectively, on an enlargedscale. Figs. 'J and 10 are sectional elevations showing niodiiiedconstructions of the adjusting device.

Like letters of reference refer to like parts in the several figures.

A represents the basement or cellar door of a building, A the firstfloor, and A'l the sec-- ond floor.

B represents a furnace arranged on the basement-floor A, and providedwith a damper, b, which closes by gravity when released.

C represents the vertical adj usting-rod eX- tending from the basementupwardly through the several floors from which it is desired to adjustthe damper.

D represents a hollow or tubular standard arranged on the first iloor,A', and surrounding the adjusting-rod C.

d represents a vertical slot formed in the standard D and provided withhorizontal branch slots or recesses e c at different heights.

E is a horizontal handle or projection se cured to the adjusting-rod Cand moving in vertical slot d when the rod is moved vertically. Tliebranch slots c c are made of such size that the handle can be introducedinto either of these branch slots by a slight turning or rotary movementofthe rod, thereby supporting the rod at different elevations. rllheupper end of the standard may be provided with a perforated cap, f. Thelower end of the standard projects below the iloor A and is providedwith a screwthread, g.

G represents a tubular casing which surrounds the adj usting-rod C belowthe standard D, and which is provided atits upperend with an internalscrew-thread, g, by which it is secured to the lower screw-threadedportion of the standard D, as represented in Figs. 2 and 3, therebysecuring the standard to the door A. The standard is provided above thedoor with an enlarged base or collar, G", which rests on the iioor.

H represents a collar which is secured by a clamping-screw to theadjusting-rod C within the tubular' casing G, and h is a chain, cord, orcable connecting the collar H with the damper b.

I represents a guide-pulley mounted on the lower end ofthe casing G bymeans ofa bearing, J, which is adjustably secured to the casing. Thecasing Gis composed of two arms,jj, provided with sockets, in whichthejournals ofthe pulley l rotate. The arms jj are provided with concavebearing-surfaces jj, which are applied to opposite sides of the tubularcasing G, as represented in Fig. 8, and which are tightened against thecasing by a clampingscrew, 7.'. Upon loosening this screw the bearing Jcan be turned on the casing, or may be raised and lowered on the casing,as may be necessary, in order to place the pulley in the requiredposition for guiding the chain properly. The chain 7i runs from thecollar H around the lower side of the pulley I, and thence over aguide-pulley, L, which is arranged over the damper.

M represents a standard arranged on the up- IOO per door, A2, andsurrounding the adjustingrod C. The standard M is provided with avertical slot, m, and horizontal branch slots n n', corresponding withthe vertical slot d and the branch slots e e of the standard D. The adjlisting-rod C is provided with a horizontal handle or projection, N,which moves in the vertical slot m of the standard M and can be lockedinto either of the branch slots a a. The standard M is secured to thedoor A2 by means of its base-flange O. A similar standard is provided oneach succeeding tloor from which it is desired to adjust the damper. Thebranch slots are arranged at the different heights at which theadjustingrod G is required to be held in order to hold the damper in thevarious desired positions. The lower end of the adjusting-rod isprovided on the furnace-floor A with a handle, p. By turning theadjusting-rod on either oor the rod is disengaged from the branch slotsof all the standards and released, so that it can be raised or lowered,as maybe required, for adjusting the damper. After the damper has beenadj usted the rod is locked in position by a backward turn, whichengages the projections on the rod with the branch slots with Which theprojections coincide. By this means the damper is easilyadjusted andlocked in position from either iloor.

The casing G extends below the joists ofthe i'ioor to which it issecured, so that the pulleybearing clears the joists, as represented inFig. 1, thereby permitting the chain to be run underneath the floor inany direction.

The damper b, as shown in the drawings, controls the air-supply to thegrate of the furnace; but it is obvious that the device may be connectedin the same manner to the damper or valve which controls the supply ofcold air to the jacket of the furnace or to the checkdamper in thesmoke-pipe.

My improved adjusting device is easilyattached to the floors of thebuilding Without marring the Wood-work. The guide-pulley I In-the modiedconstruction represented in Fig. 9 the adjusting-rod is held in aslotted socket, r, which is secured to a Wooden standard, R.

1n the modified construction represented in Fig. 10 the upright slot andthe branch slots by which the adjusting-rod is held are formed in thecasing G.

I claim as my invention- 1. The cornbinatiomwith a damper or valve.' ofan adj usting-rod, C, connected with the damper or valve and providedwith a projection, E, and a standard, D, provided with a vertical slot,d, and branch slots e e' at different heights, substantially as setforth.

2. The combination,with adamper or valve, of a vertical adj listing-rod,G, connected with the damper or valve, a locking-standard, D, a casing,G, and a pulley, I, adjustably at tach ed to said casing, substantiallyas set forth.

3. The combination, with a damper or valve, of a vertical adjlisting-rod, C, connected with the damper or valve` a locking-standard,D, provided at its'loWer end With a screw-thread, g, and a casing, G,provided at its upper end With a screw-thread, g', substantially as setforth.

4. The combination, with the tubular casing G, of a pulley, I, and apulley-bearing,.l, embracing the casing G and made horizontally andvertically adjustable thereon, substantially as set forth.

5. The combination, with the tubular casing G, of a pulley, l, and apulley-bearing, J, composed of two arms, j j, applied to opposite sidesof the casing and secured together by a clamping-screw, 7c,substantially as set forth.

6. The combination, with a damper or valve, of an adjusting-rod, C, alocking-standard, D, a casing, G, surrounding said rod, a collar, H,secured to said rod, a chain, z, connecting said collar With the damperor valve, and a guidepulley, I, attached to the casing G, substantiallyas set forth.

Witness my hand this 14th day oi' January, 1887.

FR ANK A. GARRETT.

Witnesses:

CALVIN S. BUNNELL, WATERMAN C. BRODLEY.

